frankly, some posters are so enamored of the "everything a woman does empowers all women" school of thought that no matter how you phrase it, they will be offended.
This is true! And what Buffy said. It's also true that people take their personal choices ... personally, so it's natural if they're offended when informed that their choice is incompatible with their core values. I mean, that's a pretty massive thing to tell someone.
I completely fail to see what's difficult about answering "I shave my pubes because it makes me feel better, it's not to please a man!" with an acknowledgement that the poster's free to coif her muff as she likes, and to feel clean as she chooses, but the whole shaving thing actually arose from porn & cameras, and now some young men don't even know women's vulvas are naturally hairy, etc.
I chose this example because it IS usually explained on here :) I don't think there's much excuse for not doing so with any "... but, but!" feminist's choice, really.
The best excuse would be that FWR prefers to discuss feminism mainly in the abstract, to further feminist theory without the hindrance of explanations for the less-academic despite the tumbleweed blowing through www.mumsnet.com/Talk/feminist_theory, and doesn't want to be bothered by numpties or newbies.
Should that not be the case, then we should take more care of posters' feelings.